DDITIONS IX would appear satisfactorily, but it would be too close to the tube. Togive the proper distance (18-20 cm.) a form of terrestrial ocular is used.The oculars increase the objective image about 3%. For the highestpowers it is recommended that artificial light be used. (Zeit. f. wiss… … Watsons New Model Edinburgh Students Microscope. It replacesthe one shown on p. 202. Slide Trays and Cabinets of Metal.—See § 370, pp. 264-268. As earlyas 1880 the author of this book had a local tinner make metal trays forslides, and a metal cabinet with runs to contain them, but the trays werenot…
Microscopy
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